Slider for slide fasteners



1945-- M. WINTERHALTER ,3 3

SLIDER FOR SLIDE FASTENERS Filed Feb. 5, 1943 7 Sheets-Sheet 1 777422 3271 WzihfefhwZia: W '1 [Ml-M559 M. WINTERHALTER 2,373,523

SLIDER FOR SLIDE" FASTENERS April 10; 1945.

Filed Feb. 5, 1943 7 Sheets-Sheet 3 .7, Sheets-Sheet 4 M WINTERHALTER SLIDERFbR SQLIYDE FASTENERS f Filed eb; 5, 1945 A ril. 10; 1945;

April 10, 1945. M. WINTERHALTER SLIDER FOR SLIDE FASTENERS Filed Feb. 5, 1943 7 Sheets-Sheet 5 April 10, 1945. M. WINTERHALTER SLIDER FOR SLIDE FASTENERS Filed Feb. 5, 1945 '7 Sheets-Sheet 6 April 1945- M. WINTERHALTER I SLIDER FOR SLIDE FASTENERS Filed Feb. 5, 1943 7 Sheets-Sheet 7 7 75;652277 Wa'fizewhzZfez? 75a M W W 55245- Patented Apr. 10, 1945 'snmm Fon sum: FASTENERS Martin Winter-halter, Morcote, near Lugan Switzerland Application February 5, 1943, sfl'illNo. 474,779 In Switzerland February 5, 1942 I 3 clam-8.; (Cl. 24-2055) This invention relates to sliders for slide fasteners made of metallic or non-metallic materials.

Sliders for slide fasteners usually comprise a slider body and a pull attachin member formed as loop projecting above the surface of the slider body. Itis customary to mold the slider body and the pull attaching member either in a single piece, or to form them as separate members and subsequently attach them to one another. When the slider body and the pull attaching member form a single piece the pull tab must be formed as open or slotted loop in order that it can be introduced into the pull attaching member whereafter it must be squeezed together. In this case it can happen that the pull tab is pulled off from its attaching member when exerting a pulling action on the tab. In sliders which are molded from artificial resin materials and the like it is however possible to place a pull tab having a closed loop into the empty mold prior to forming the slider and then to mold the slider with the pull attaching member traversing a closed loop pull tab in a single piece. This method of molding sliders however is complicated and can be used only for pull tabs of particular shapes.

When the slider body and the pull attaching member are formed a separate parts, the subsequent attachment of the two parts is effected by means of supplementary fastening members such as pins,,screws or rivets, or also by means of soldering. This latter manner of uniting the slider :body andthe pull attaching member is not Further, in this case, when the slider pull attaching member by means of pins or rivets to the sliderbody, and thi core must be surrounded by molded material. which is more complicated than when the pull attaching member could be made of molded material alone.

The object of the invention is the provision of a slider which can consist of metallic or nonmetallic materials, and which comprises a slider body and a pull attaching member,'formed as separate parts, the two parts-being provided with cooperating portions. engaging each other for securing the pull attaching member to the slider body without the use of supplementary fastening members. 1

A further object of the invention is the provision of a method for making sliders of metallic or non-metallic materials and being formed by a slider body and a separate pull attaching member, which method avoidsthe above mentioned inconveniences and provides an easy, simple and reliablefastening of the two parts one to the other. 4

Other objects and advantages will appear from the following description of two examples 01' a slider according to the invention and of the method of making it, reference being had to the accompanying drawings, in which Fig- 1 is a front elevation of a slider.

Fig. 2 is a sectional view of the slider taken along the line 1I-II of Fig. 1.

Fig. 3 is a lateral elevation of the pull attaching member before being secured to the slider body.

Fig. 4 shows the pull attaching member seen from the inside or from the left of Fig. 3.

Fig. 5 is a front elevation of the slider bod without the pull attaching member.

Fig. 6 is a sectional view of the slider body along the line VI-VI of Fig. 5.

Figs. 7 and 8 are views of the slider body from below and from above.

Figs. 9 and 10 are a plan view and front view of a locking spring designed to be inserted into the slider.

Figs. 11 and 12 are a front'view and a lateral elevation of a modified form of a slider.

Fig. 13 is a lateral elevation of the pull attaching member before being secured to the slider body.

Fig. 14 is a view of the inside face of the pull 7 attaching member.

Fig. 15 is a front elevation of the slider body before the fastening of the pull attaching member.

Fig. 16"ls a section through the slider body along the line XVI-XVI of Fig. 15.

Fig. 17 is a fragmentary section of the slider body along the line XVIIXVIIof Fig. 15. v

Figs. 18 and 19 are views of the slider body from'below and from above.

Fig. 20 is a plan view of a modified slider formed of moldable material and having its upper wing covered witha plate of colored aluminium.

Fig. 21 is view of this slider from below.

Fig. 22 is a vertical section through this slider and Fig. 23 is a section along the line XXIII- XXIII of Fig. 20.

Fig. 24 shows the locking spring used in this slider. v

Fig. 25 is a plan view of a further modification of a slider.

Fig. 26 is. a view of the slider from below.

Fig. 2'7 is a vertical section through the slider and Fig. 28 is a section along the line XXVIII- XXVIII of Fig. 27.

Fig. 29 represents the pull attaching member.

Fig. 30 is a plan view of a further modified slider.

Fig. 31 is a view of this slider from below.

Fig, 32 is a vertical section through the slider.

Fig. 33 is a vertical section through a modified form of a slider.

Fig. 34 is a transverse section along the line XXXIV-XXICIV of Fi 33.

Fig. 35 is a plan view of a slider according to a 'XLEHIXLIII of Fig. 40.

Fig. 44 represents the pull attaching member before being secured to the slider body.

Fig. 45 is a plan view of a further modification.

Fig. 46 is a view of this modified slider from below.

Fig. 47 is a vertical section through the slider.

Fig. 48 shows a modification of a detail in section.

Fig. 49 is a plan view of a further example of a slider according to the invention.

Fig. 50 is a vertical section through this slider.

Figs. 51 and 52 are transverse sections according to the lines LILI and LIL-LII, respectively, of Fig. 49.

Fig. 53 represents the pull attaching member of this slider.

Fig. 54 shows a still further modification of a slider according to the invention in plan view.

Fig. 55 is a view of this slider from below.

Fig. 56 is a vertical section through this slider.

Fig. 57 represents the pull attaching member used with this slider.

Fig. 58 shows a further modified slider in vertical section.

Fig. 59 is a section along the line LIX-LIX of Fig. 58.

Fig. 60 is a fragmentary sectional view of a further modified slider before the pull attaching member is secured to the slider body.

Fig. 61 is a similar sectional view after securing of the pull attaching member.

Fig. 62 is a detail view showing the manner of attaching the locking spring to the slider body in the sliders according to Figs. 58 and 61.

In the example represented in Figs, 1 to 10, the slider for slide fasteners comprises a slider body I, a pull attaching member 2, a locking spring 3 inserted between the slider body and the pull attaching member, and a pull tab 4 passing between the locking spring and the face of the slider body. The slider body is formed as usual with a front wing and a back wing Ii rigidly connected to each other by means of the wedge piece I. The two slider wings 5 and 6 are provided with marginal side flanges 8 and 9 for guiding the fastener elements of the slide fastener.

The front wing 5 is provided at its lower portion with a recess III (Figs. 5 and 6) penetrating entirely through the wing. so as to form a web II between this recess and the lower edge of the wing providing an abutment surface I2 extending parallel with the surface of the wing 5. The upper end of the front wing 5 is provided with a recess I3 forming a cavity I4 extending into the wedge. member I and providing an abutment surface I5 extending parallel with the surface of the wing 5. Behind the recess I3 the slider body is formed with a projecting portion IS.

The pull attaching member 2 (Figs. 3 and 4) is provided at both upper and lower ends with a coupling nose I1 and I8 respectively. The width of these noses is slightly less than the width of the body of the attachin member 2, so that abutment surfaces I9 and 20, respectively are formed on both sides of the noses I1 and I8. These coupling noses are destined to engage into the recesses III and I3 of the slider body I,

and the width of the noses corresponds exactly to the width of the corresponding recesses, so that the pull attaching member can be inserted with the two noses fitting exactly into the recesses of the slider body. The upper nose I8 of the member 2 is provided with a downwardly projecting extension 2| destined to enter into the cavity ll of the recess I3.

In order to secure the pull attaching member 2 to the slider body I, the member 2 is inserted with its two noses I1 and I8 into the corresponding recesses I II and I3, so that the abutment surfaces I9 and 20 bear against the surface of the front wing 5 of the slider body. as is represented in. dash and dot lines in Fig. 6, and then the member 2 is downwardly moved relatively to the slider body I so that the nose I! engages behind the abutment surface I2, and the extension 2I penetrates into the cavity ll of the recess I3 and engages behind the abutment surface I5 on the slider body. The pull attaching member is now connected to the slider body I in the manner of a bayonet joint and is maintained by the two abutment surfaces I2 and II from falling off the slider body. Owing to the abutment surfaces I9 and 20 bearing against the-surface of the front wing 5 and of the abutment surfaces I2 and I5 cooperating with the noses I! and I3 of the member 2, this latter is rigidly maintained in its proper position on the front wing I.

In order to prevent an upward longitudinal displacement of the pull attaching member 2 relatively to the slider body I after the member 2 has been placed in its correct position on the upper wing I, the material of the projecting portion I8 (Figs. 5 and'6) is forced to extend over the nose I 8 of the member 2 as shown in Fig. 2, so that the nose I3, owing to the portion of material l6 cannot be removed any more from the recess II of the slider body, and the pull attaching member 2 is permanently secured to the slider body. When the slider body and the pull attaching member consist of thermoplastic material as it is the case in the represented example, the proiecting portion II can be forced over the nose II by means of a hot tool so that a welded joint is produced between the nose I8 and the portion I8. The slider body and the pull attaching member can also be made of metal and the projecting portion I6 can then be forced to extend over the nose I! after the member 2 has been introduced in its correct position. and eventually the portion I8 can be soldered or welded to the slider body. The permanent securing of the pull attaching member to the slider body could also be obtained without providing a projecting portion it, only by welding-or soldering the contacting surfaces of one or both noses I1 and I8 and the slider body. In this manner a solid fastening of the pull attaching member on the slider body is realized, and the connection between these two parts is as reliable as if the slider would be formed of a single piece.

The surface of the front wing is provided witha flat recess 22 which is adapted to receive the T-shaped head of the blade spring 3 the other end of which passes through the recess ill of the front-wing 5 and carries a locking prong 24 which penetrates between successive fastener elements to lock the slider in its position when the pull-tab mamas position shown in Fig. 2 and no pulling actionis exerted thereon.

The pull tab 4,,in; llthef'reprgesented.position, is formed by a closed loop-shaped metal-pore 25 which is surrounded by molded thermoplastic material 25. The portiori 21 of the pull tabis inserted into a cavity or depression formed by two oppositely inclined surfaces 28 and 29 in the front wing 5 of the slider body. When assembling the slider the pull tab 4 is first inserted with its portion 21 into the cavity 28, 29 of the front wing 5, then the'locking spring 3 is placed in its proper position above the portion 21 of the pull tab with its T-shaped end introduced in the recess '22, afterwards the pull attaching member 2 is secured to the slider body in the described manner. The.v end of the locking spring 3 insertedinthe recess 22 is then firmly clamped between the member 2 and the front surface of the slider body, while the remaining portion of the spring passes between the portion 21 of the pull tab and the member 2 and is provided with a certain play, so that upon effecting a pulling action on the tab for displacing the slider in one or the other direction the locking prong is lifted out of engagement with the fastener elements to release the slider. Owing to the depression in the surface of the slider, formed by the inclined surfaces 28 and 29, a portion of the pulling action exerted on the pull tab 4 is immediately transmitted to the slider body I and the pull attaching member 2 is partially relieved from the pulling action.

In the example according to Figs. 11 to 1'7 the pull attaching member 2 is secured to the slider body I in the same manner as in the previously described example. At both ends of the member 2 are provided the coupling noses I1 and I8 adapted to be inserted into the recesses l0 and I3 of the front wing 5 of the slider body, whereafter the member 2 is longitudinally displaced relatively to the slider body to engage the coupling noses l1 and It in the manner of a bayonet joint behind the abutment surfaces I2 and I5 of the front wing 5, and finally the material of the projection IS on the slider body is forced above the nose I! of the member 2.

The loop-shaped pull member 30 is inserted between two projections 3| and 32 of the front wing 5. In the central portion ofthe front wing a shallow recess formed by two oppositely inclined surfaces 33 and 34 is provided so that the space limited between the two projections extends until below the surface of the front wing and the projections as well as the pull tab inserted between them only slightly project beyond the surface of the front wing 5, whereby the height of the slider can be reduced. The pull tab 30 is provided with a locking prong 35 (Fig. 12) which penetrates through a slot 36 joining the recess ID in the front wing 5 and engages between adjacent fastener elements of the slide fastener when the pull tab is in its position of rest as shown in Fig. 12, in order to prevent an undesired displacement of the slider. The slot 35 is covered by the pull attaching member 2, and in order that the pull tab can be swung upwardly from the position shown in Fig. 12, when the slider is'to be displaced in the direction for closing the slide fastener a groove 31 is provided in the material of the member 2 this groove is open at the inside of the member 2 but is closed on the external side 'of'the member 2 The back wall of the groove extends concehtrfcally with the axis of rotation of the pull tab situated between the two projections 3| and 32, so that when the pull tab 30 is swung upwardly, the locking prong 35 penetrates into the groove 31 and moves along this groove. In this manner the locking prong is not visible from the outside and is completely enclosed and guided within the member 2, while in known sliders the locking prong, when carried by the pull tab, is disposed laterally outside of the pull attaching member and when the slider is displaced it can happen that the prong hurts the fingers holding the pull tab. The loopshaped pull tab 30 is provided with two lateral guide noses 38 which maintain the pull tab in its correct position so that the locking prong 35 always remains within the slot 36 or groove 31.

Since the pull tab 30 is inserted between the two projections 3| and 32 of the front wing 5 of the slider, the pulling effort exerted on the tab is directly transmitted to the slider body I and the pull attaching member 2 is completely discharged from any tractive effort.

The modified slider represented in Figs. 20 to 24 comprises a slider body 40 and a pull attaching member 4| forming a distinct part. The slider body 40 is formed as usual by a lower or back wing 42 and an upper or front wing 43, rigidly connected by the wedge piece 44 which is integral with the two wings. The pull attaching member 4| is provided at its upper end with a nose 45 and. at its lower end with a nose 45. The slider body is provided on its top portion with a recess 41, while in the lower portion of the upper wing 43 an opening 48 is provided, so that the lower edge of the upper wing forms a web 43. The slider body is provided on its top, in proximity to the recess 41, with a projecting portion of material which, before fixingthe pull attaching member 4|, is located as indicated with dash and dot lines in Fig. 22. In order to secure the member 4| to the slider body, its nose 45 i inserted into the recess 41 so as to engage behind the projection 5| of the slider body, while the nose 46 of the member 4| is engaged through the opening 48 behind the web 49 of the slider body.

' Afterwards the projecting material 50 is pressed down over the nose 45 of the member 4|, so that this latter is prevented from moving and is thus firmly attached to the slider body.

The top face of the upper wing 43 is covered by a cap member or plate 52. This latter is fixed to the upper wing by means of rivets 53 before the pull attaching member 4| is united with the slider body. The cap member 52 is provided with an opening 54 corresponding to the opening 48 of the slider body, and with an opening 55. A projecting portion 55 of the upper wing penetrates into' the opening 55; the height of the projecting portion 56 is smaller than the thickness of the cap member 52, so that a small space is left between the upper face of the projection 55 and the inner face of the pull attaching member 4|, into which space the upper end 58 of a locking spring 59 is inserted. This upper end of the spring is providedwith two lateral wing 50, slightly bent downwards toward the slider body to penetrate into recesses 5|. disposed laterally of the projection 55 (Fig. 23). The opposite end of the lockin spring 59 is bent downwardly so as to extend through the openings 54 and 48 in the cap member and in the upper wing, and is provided with a locking prong 52 which; as is well known, is destined to penetrate between successive fastener members of the slide fastener operated by the slider, in order to lock the slider in the desired position along the fastener stringers.

After having secured the cap member 52 to the slider body, the locking spring 59 is placed in its correct position with its end portion 58 restin on the projection 55 of the slider body. The pull attaching member 4| can be fixed in the described manner to the slider body. When the pull attaching member is secured to the slider body it inner surface 51 locks the spring 58 in the opening 55 of the cap member and the spring cannot be detached any more from the slider body. A lateral movement of the spring is prevented by the edge of the opening 55 in the cap member, while the wings 60 of the spring, engaged in the recesses 5| the length of which corresponds to the length of the wings, prevent a longitudinal movement of the spring.

The slider body 40 can be made of metal, for example of cast zinc or molded thermoplastic material, while the cap member 52 is made of aluminium. This slider is particularly destined for use with slide fasteners having aluminium fastener members which have been colored by anodic oxidation. In order that the slider shows the same color shade as the fastener members, it should also consist of aluminium. However, it is more convenient to cast or mold the slider from zinc or thermoplastic material. In order to impart in'this case the same shade of color to the visible upper face of the slider as to the fastener members, the cap member 52 is made of aluminium and colored in the same manner as the fastener members.

The usual pull tab 93 cooperates with the locking spring 59 which is pulled outwardly anddisengaged from the fastener members to release the slider when this latter is to be operated in one or the other direction by exerting a pulling action on the pull tab; the inner face of the pull attaching member 4| limits the outward movement of the locking spring 59.

The abutment surface 51 of the pull attaching member which maintains the spring end 59 in the opening 55 of the cap member 52 lies against the cap member on both sides of the opening 55 and assists in holding the cap member 52 in it position on the upper wing. For example, the upper rivet could be suppressed, since the surface 51 of the pull attaching member, together with the marginal portions of the cap member overlapping the edge of the upper wing 43, forma sufllcient means to hold the cap member on the slider body.

Figs. 25 to 29 show an example of a slider in which the cap member 52 i attached to the slider body 49 by means of the pull attaching member 4|. The slider body is formed as usual with lower and upper wings 42 and 43, united by the wedge 44. The wedge portion of the slider body is traversed by a hole 64. The upper wing 43 is provided with an opening 85 through which extends the locking prong 82 of the spring 59. The lower end of the upper wing is provided with a recess 58 limited by an inclined surface 51. The pull attaching member 4| which is distinct of the lider body is provided with a stud 68 at its upper end and with a nose 69 at its lower end. Before fixing the pull attaching member 4| to the slider body the cap member 52 having a bent down marginal portion 10 is placed on the upper wing 43. The cap member is provided with openings corresponding to the openings 64 and 65 of the slider body, and with a recess 'Il corresponding to the recess 65 of the upper wing. The locking spring 59 is then placed over the cap member '52; this spring also is provided with an opening corresponding to the opening '64 of the slider body. Then the stud 58 of the pull attachin member i introduced through the openings of the spring 59 and the cap member 52 into the opening 54 of the slider body, and the nose 69 of the pull attaching member, which is directed straight rearwardly before securing the pull attaching member to the slider body, is inserted in the recess 59, in such manner that the two surfaces 12 and I3 of the pull attaching member abut against the spring 59 and the cap member 52, respectively. In this position, the stud B8 is riveted in the opening 54, and the nose 69 of the pull attaching member is pressed towards the inclined surface 5! of the upper wing 43 as is represented in Fig. 2'7. In this manner the pull attaching member 4| is rigidly attached to the slider body 40, and its two abutment surfaces 12, I3 and the stud 6B maintain the cap member 52 firmly in contact with the upper wing 43.

In the example according to Figs. 30, 31 and 32, the Wedge member 44 of the slider body 49 is pierced with an opening 64, in which the stud I4 of the pull attaching member 4| penetrating through registering openings in the locking spring 59 and in the cap member 52, is secured by riveting. At the lowerv end of the upper win 43 and of the cap member 52 an opening 15 of dovetail shape is provided. The locking pron 62 of the spring 59 extends through this opening, and the nose 15 of the pull attaching member 4| is engaged and riveted in this opening. Before the insertion of the nose 15 in the dove-tail opening, the nose forms a straight extension. and after such insert on the nose is riveted to adapt itself to the shape of the openin 15; a recess 11 provided in the lower plate 42 of the slider body facilitates the introduction of a tool for performing this riveting operation, after which the pull attaching member is rigidly secured to the slider body. The pull attaching member is provided with abutment faces 12 and 13, similar to those represented in Fig. 29, which rest against the cap member 52 when the pull attaching member is secured to the slider body and hold the cap in tight engagement with the upper wing.

In this example, the upper end of the locking spring '59 is disposed beneath the cap member 52. A tongue 18 is cut from this latter and bent out of the plane of the upper wing. The free end of this tongue serves for abutment of the locking spring when this latter is pulled outwardly by the not represented pull tab when the slider is operated. In order to maintain the looking spring 59 in its correct locking position, the upper wing 43 of the slider body is provided with projections 1-9 and penetrating through corresponding openings of the cap member 52 and against which the spring abuts in its looking position under the action of its proper tension. The spring 58 and the projections I8 and 88 are covered by the pull attachin member and are not visible when the slider i completed. Only the pull attaching member 4| and the cap member of colored aluminium can be seen when the slide fastener is assembled and in use.

The slider shown in Figs. 33 and 34 is similar to the one just described with reference to Figs. 30 to 32, with the exception that the opening 8| in the upper wing for the passage of the locking spring 59 and for attaching the stud.|6 of the pull attaching member is not provided at the lower edge of the upper wing, as the opening in Fig. 32, but slightly above this lower edge, so that when the slider body has the same dimension as that of Fig. 32, the pull attaching member 4| and the locking spring 58 are shorter than in Fig. 32. The opening 8| is of dove-tail shape. The stud 16 of the pull attaching member has originally the shape as shown in dash and dot lines in Fig. 34, with a slotted end. After insertion of the stud into the opening 8| the slotted portions of the stud are pressed apart laterally in order to adapt themselves to the dove-tail shape of the opening 8 I. An opening I! in the lower wing 42 serves for introducing a tool for riveting the stud 16. After riveting of the studs I4 and I6 the pull attaching member 4| is rigidly secured to the slider body, and the abutting surfaces 13 laterally of the stud I6, and by the not represented abutting surfaces laterally of the upper stud 14, the cap member 52 is maintained inits position on the upper wing. A tongue 18 is cut out from the cap member 52 and bent out of the plane of the upper wind in order to serve as abutment of the locking spring 59 when it is pulled outwardly into its position of release upon operation of the slider, while a projection 18 on the upper plate maintains the spring 59 in its correct locking position.

The slider represented in Figs. 35 to 38 comprises again 'a slider body 48 having a lower wing 42 and an upper wing 43, united together by a wedge member 44. The pull attaching member 4I' preferably is stamped from sheet aluminium and is formed with a stud 82 at its upper end and a stud 83 at its lower end. The studs are of less width than the main body of the member 4| so that abutment shoulders I2 and I3 are formed where the studs 82 and 83 join the main body of the member 4|. The two studs are provided each with a recess 84 and 85, respectively. A hole 86 is provided in the wedge 44 to receive the stud 82, and the thickened lower portion of the upper wing 43 is pierced by a hole 81 for receiving the stud 83. Before securing the pull attaching member 4| to the slider body the locking spring 59 is placed on the upper wing 43. The locking spring is provided with an opening 88 for the passage of the stud 82 of the pull attaching member, and with a locking prong 62 penetrating through an opening 88 in the upper wing of theslider body. First the locking spring 59 and then the cap member 52 are placed on the upper wing 43, and then the studs 82 and 83 of the pull attaching member are inserted through corresponding openings in the cap and spring members into the hole 84 of the wedge 44 and into the opening 81 of the upper wing, until the surfaces I2 and 13 of the pull attaching member abut against the cap member 52. Afterwards the material of the slider body is pressed by means of a punching tool into the recess 84 in the stud 82, and the material of the upper wing 43 is pressed into the recess 85 of the stud 83, whereby small cavities 88 are formed in the slider body and at the lower edge of the upper wing. The pull attaching member 4| ,now is firmly secured to the slider body and also maintains the cap member in its position by means-of the abutment surfaces 12 and 13. The cap member 52 is provided with an opening 8| situated beneath the pull attaching member. through. which passes the locking spring 58, which, in its locking position, abuts against the projection 92 of the upper wing extending through the opening 9|, as also against the projection 93 of the upper wing extending through a further opening 94 of the cap member. The locking spring 58 is provided with twonoses 85 and 85' by the intermediary of which the spring abuts against the inner surface of the pull attaching member 4| when a pulling action is exerted on the pull tab 83 for operating the slider.

The modification according to Fig. 39 is similar to the example just described, but the spring 59 is only provided with a single nose 85 to abut against the pull attaching member 4| while a tongue 18 is cutout from the cap member 52 and applied against the inner face of the pull attaching member, which tongue serves to limit the outward movement of the spring 58 when the not represented pull tab is gripped to move the slider.

In the example according to Figs. 48 to 44 the pull attachingmember 4| has the shape represented in full lines in Fig. 44, before it is secured to the slider body 48. The upper end of the member 4| forms an extension 86 which is of less width than that of the middle portion of the pull attaching member so'that abutment surfaces 9! are formed on either side of this member at the base of the extension 86. The lower end of the pull attaching member is provided with a small extension 88. The wedge 44 of the slider body is pierced with an opening 98 joined by a recess 88 in the lower wing of the slider body. The locking spring 58 has its upper end bent at right angles and inserted in an enlarged portion of the opening 88, while the lower end of the spring, provided with a, locking prong 62, penetrates through an opening I8I of the upper wing 43. The lower end of the upper wing 43, between the opening IN and a recess I82, forms a web I83 slightly projecting beyond the plane of the upper wing. The cap member 52 placed on the upper wing comprises a marginal portion |84 bent down over the edge of the upper wing to secure the cap member to the slider body. Moreover the cap member 52 is provided with two diametrically opposed flaps |84 which extend over the entire thickness of the edge portion of the upper wing to hold the cap member in its position on the upper wing. After having the cap member attached to the slider body and the locking spring placed in its correct position, the pull attaching member can be secured to the slider body. For this purpose the extension 86 is inserted through a corresponding opening in the cap member 52 into the opening 88 of the slider body, and the extension 88 is inserted into the recess I82 in the upper wing, until the abutment surface 81 of the pull attaching member 4| arrives against the cap member 52 and a further abutment surface I85 arrives against the web I03. The end of the extension 86 is bent downwardly intothe recess I88 of the lower wing 42, while the extension 88 is bent upwardly behind the web I83. The pull attaching member 4| now is firmly secured to the slider body and its abutment surface 81 is resting against the upper portion of the locking spring 59 and maintains this latter in its position; at the same time the surface 91 is resting against the cap member 52 and assists in holding the cap member on the slide body.

In the example represented in Figs. 45 to 47 the cap member I06 made of aluminium forms itself the upper wing of the slider body. The wedge 44 of the slider body is pierced with a hole 99 and a joining recess I is provided in the lower wing I00. In the upper wing or cap member I06 an opening I0! is provided corresponding to the hole 99 in the wedge. In order to secure the upper wing to the slider body, the upper wing is provided with a further opening I08 through which extends a hook-shaped projection I09 of the slider body. The upper wing I06 is placed with its opening I08 over the projection I09 and then pushed upwardly so that the nose IIO of the projection engages over the cut out portion III of the upper wing. In this position of the upper wing the openings I01 of the wing registers with the opening 99 of the wedge and the originally straight extension 96 of the pull attaching member can be inserted through these two openings after the upper end of the locking spring 59, bent at right angles, has been engaged in an enlarged portion of the openings I0! and 99. The extension 96 of the pull attaching member prevents a relative movement between the slider body 40 and the upper wing I08, and the nose I06 prevents the removal of the upper wing I06 from the slider body, the upper wing being thus locked on the slider body. Simultaneously with the insertion of the extension 96 into the opening 99 of the slider, body also the extension N3 of the pull attaching member, which is originally straight as shown in dash and dot lines in Fig. 4.7, is introduced into the opening II4 of the upper wing, limited by an inclined surface I I5 on its lower side. The end of the extension 96 is now bent down into the recess I00, and the extension H3 is pressed towards the inclined surface H5. The lower wing 42 of the slider body is provided with an opening H6 through which a tool can be introduced for bending down the extension H3. The pull attaching member is now permanentlyconnected to the slider body 40 and by its abutment surface 91 it maintains the locking spring 91 in its position.

In the modification according to Fig. 48 the upper wing I I1 is secured to the slider body in the same manner as the upper wing I01 in Fig. 47. The lower end of the pull attaching member H is provided with an originally straight extension II8 which is bent about a web II9 projecting beyond the .plane of the upper wing.

In the example according to Figs. 49 to 53 the upper wing 43 of the slider body 40 is provided with two projections I and I2I for securing the pull attaching member M. This latter is formed by a piece of sheet material of U-shaped crosssection having two lateral recesses I22 for receiving the pull tab, not represented. The cap member 52 is provided with the necessary opening for placing it over the projections I20 and I2I against the upper wing 43 of the slider body 40. For attaching the locking spring 59, the projection I20 is provided with a lateral slot I23 into which the upper narrow end I25 of the locking spring, provided with a bent down portion I24, is inserted. The opposite end of the spring provided with a locking prong 62 extends through an opening I26 in the upper wing 43 and in the cap member 52. After placing the cap member 52 on the upper wing and insertion of the upper spring end I25 into the slot I23 the pull attaching member H can be placed over the two projections I20 and HI until theedge faces I21 of the lateral wall portions of the member 4I abut against the cap member 52. The two upper and lower narrow sides of the pull attaching member are then pressed inwardly as shown in Figs.,50 and 53 so as to form wall portions I29 engaging behind the projections I20 and I2I and preventing removal of the pull attaching member from the slider body. The cap member 52 in turn is maintained in its position by the surfaces I2I of the pull attaching member, and the upper end I25 of the locking spring is engaged in the slot I23 between the abutment I20 and the wall surface of the pull attaching member and cannot be removed from its position.

In the example according to Figs. 54 to 57 no locking spring is used, but locking of the slider in its adjusted position is effected by the pull attaching member itself which is fixed to the slider body so as to be movable. The pull attaching member I30 is U-shaped in cross section and is formed at its upper end with an extension I3I having an opening I32 engaging with play over a projection I33 of the slider body 40. The lower portion of the pull attaching member 4I extends through an opening I34 of the upper wing 43 and is provided with a. locking prong I35 capable of penetrating betweensuccessive fastener members of the slide fastener stringers along which the slider can move. At its lower end the pull attaching member is provided with an extension I36 which is bent downwardly and engages behind a web I31 projecting beyond the plane of the upper wing 43. A spring I38 acting against the extension I3I of the pull attaching member, and supported in a hole of the wedge 44, tends to press the lower end of the pull attaching member I30 into the space between the upper and lower wings and to urge the locking prong I35 between successive fastener members. The lateral walls of the pull attaching member are provided with recesses I39 for receiving the pull tab, not represented. When the slider is to be operated and a pulling action is exerted on the pull attaching member, its lower end is rocked outwardly against the action of the spring I38 until the extension I36 abuts against the web I31 and the locking prong has moved out of its locking position. The fulcrum for this rockin movement of the pull attaching member is formed by a projection I40 of the upper wing 43. This projection at the same time serves as abutment for the pull tab when the slider is to be pulled upwardly in Fig. 56 and relieves the pull attaching member from the major portion of the pulling effort. The upper wing 43 of the slider body is covered by the cap member 52. This latter is maintained on the slider body by flanging its edge portion about the edge of the upper plate, and is provided with the necessary openings to give passage to the extension I3I and to the projection I40, as well as to the locking prong I35 and to the extension I36. A tongue MI is cut out from the upper portion of the cap member 52, and an opening I42 permits insertion of the spring I38 after the cap member 52 has been secured to the slider body. After securing the cap member in its position and insertion of the spring I38, the pull attaching member I30 is placed in its correct position on the slider body and then the tongue I of the cap member is pressed inwardly until it abuts against the upper face of the extension Ill oi the pull attaching member, as shown in Figs. 54 and 55.

The pull attaching member now cannot move any more in longitudinal direction, but is maintained on the slider body by the tongue I of the cap member and by the web I91 the upper wing 43, and can only effect a limited rocking movement required for engaging and disengaging the locking prong I35.

In the example represented in Figs. 58 and 59 the cap member 52 covering the upper wing 43 is secured to the slider body by bending its edge portion over the edge of the upper wing. In order to fix the locking spring 59, a recess I43 is provided in the upper wing (Fig. 62) at both sides of which the material of the upper wing originally forms projections I44. The upper end I45 of the locking spring is inserted into the recess I43 and the material of the projections I44 is then pressed over the spring end I45 (Fig. 59) so that the spring is fixedly clamped in the slider body. The locking prong 62 oi the spring 59 extends through an opening I46 in the upper wing 43. For securing the pull attaching member in its position, a recess I41 is provided on the top of the slider body and a hook-shaped end I48 of an extension I49 of the pull attaching member.engages in this recess I41. The lower end or the pull attaching member is provided with a downwardly bent extension I50 engaging behind the web IUI adjacent to the opening I46 of the upper wing 43. The cap member 52 is provided with an opening I52 giving passage to the extension I49 of the pull attaching member, and with a. tongue I similar to that shown in Figs. 54 and 56. After having fixed the locking spring 59 to the slider body, the cap member 52 is secured thereto and then the pull attaching member 4I placed in its position. The tongue I of the cap member is pressed downwardly until it abuts against the upper face of the extension I49 of the pull attaching member as shown in Fig. 58. Now the pull attaching member cannot move any more in longitudinal direction and the bent down end I49 of the extension I49 cannot release from engagement behind the projection I" of the upper wing 43, while the lower extension I50 of the pull attaching member remains engaged behind the web II. The abutment surface I94 of the pull attaching member lying against the cap member 52 assists in maintaining the cap member on the slider body. The spring 59 in its locking position abuts against two projections I59 and I59 of the upper wing 43. The'projection I59 also serves as abutment for the not represented pull tab, so that the pull attaching member is partially relieved from the action of the pulling effort when the slider is upwardly pulled as seen; in Fig. 58.

The slider shown in Figs. 60 and 61 is similar to that represented in Figs. 58 and 59. Th extension I49 of the pull attaching member H is not bent down as in Fig. 58 but is originally straight. After securing the cap member 52 to the slider body, the extension I 49 is inserted through a corresponding opening in the cap member into the recess I41 of the slider body (Fig. 60). Then pressure is exerted from above on the portion of the cap member 52 extendin over the upper edge of the slider body to bend the extension I49 into th recess I41, so that this extension engages behind the projection I53 of the upper wing of the slider body. The spring end I of the locking spring is attached to the slider body in the same manner as described with reference to Figs. 58 and 59.

While the invention has been described in connection with specific examples shown in the accompanying drawings, it is well understood, that changes in the construction, form and arrangement of parts may be mad without departing from the principle of the present invention as comprehended within the scope of the appended claims.

I claim:

1. A slider for slide fasteners comprising a slider body having an aperture therein, a pull tab and an attaching member, the pull tab having a portion thereof extending between the attaching member and the body, there being a slider locking detent present, said detent being secured at one of its ends between the body and an overlying part of said attaching member and extending away from said end, then extending between said portion of the pull tab and the attaching member and finally terminating in a locking prong that projects through said aperture in said body in a plane at right angles to the plane of such secured end portion, whereby a pull upon said pull tab move said locking prong into an inoperative position.

2. A slider of the construction set forth in claim 1 wherein such secured part of said slider locking detent has a T shaped head, seated in a complementary recess. so as to anchor the same securely against movement longitudinally or transversely with respect to said slider body.

3. A slider of the construction set forth in claim 1 wherein the attaching member has its extremities interlocked with portions of said body thus preventing displacement of the parts when said pull tab is pulled in either direction of its movement.

MARTIN WINTERHALTER. 

